Chapter 4: Q11. (page 244)

Write an equation of the line that passes through the point $(0, 0)$ and has a slope $- 4$ .
A. $y = x - 4$
B. $y = x + 4$
C. $y = - 4 x$
D. $y = 4 - x$

Short Answer

Expert verified

The equation of the straight line for the given condition is $y = - 4 x$ . Option(C) is correct.

Step by step solution

Step 1. State the concept of a straight line.

The standard form of slope and intercept form of the straight line is $y = m x + c$ .

Here, $m$ is the slope of the straight line and $c$ is the $y$ -intercept of the equation.

Step 2. State the equation of a line slope-point form.

The standard form of slope and point form of the straight line is $y - y_{1} = m (x - x_{1})$

Here $m$ is the slope of the straight line and is the point from which the straight line passes.

$(x_{1}, y_{1}) = (0, 0) m = - 4$

Step 3. Substitute the values to get the required equation.

Substitute the above values in the equation $y - y_{1} = m (x - x_{1})$

$y - y_{1} = m (x - x_{1}) y - 0 = - 4 (x - 0) y = - 4 x$

The equation of the straight line is $y = - 4 x$ . Option (C) is correct.

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Write an equation of the line that passes through the point $(0, 0)$ and has a slope $- 4$ .
A. $y = x - 4$
B. $y = x + 4$
C. $y = - 4 x$
D. $y = 4 - x$

Short Answer

Step by step solution

Step 1. State the concept of a straight line.

Step 2. State the equation of a line slope-point form.

Step 3. Substitute the values to get the required equation.

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Write an equation of the line that passes through the point0,0 and has a slope-4.A.y=x−4B.y=x+4C.y=−4xD.y=4−x

Short Answer

Step by step solution

Step 1. State the concept of a straight line.

Step 2. State the equation of a line slope-point form.

Step 3. Substitute the values to get the required equation.

One App. One Place for Learning.

Most popular questions from this chapter

Recommended explanations on Math Textbooks

Pure Maths

Probability and Statistics

Mechanics Maths

Applied Mathematics

Logic and Functions

Geometry

Study anywhere. Anytime. Across all devices.

Write an equation of the line that passes through the point $(0, 0)$ and has a slope $- 4$ .
A. $y = x - 4$
B. $y = x + 4$
C. $y = - 4 x$
D. $y = 4 - x$