How to find the equation of a line

Practice Questions

PSAT Math › How to find the equation of a line

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1

Whast line goes through the points and ?

2

What is the equation of the line with a negative slope that passes through the y-intercept and one x-intercept of the graph y = –x_2 – 2_x + 8 ?

3

Axes

Refer to the above red line. A line is drawn perpendicular to that line, and with the same -intercept. What is the equation of that line in slope-intercept form?

4

Solve the equation for x and y.

xy = 26/17

2_x_ + 3_y_ = 2

5

Which line contains the following ordered pairs:

and

6

What is the equation for a line with endpoints (-1, 4) and (2, -5)?

7

What line goes through the points (1, 1) and (–2, 3)?

8

What is the equation of the line that passes through the points (4,7) and (8,10)?

9

Solve the equation for x and y.

x – 4_y_ = 245

5_x_ + 2_y_ = 150

10

Solve the equation for x and y.

xy=30

x – y = –1

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