Question

Write the equation of the line that passes through (−2, 6) and (2, 14) in slope-intercept form.

A. y = 2x − 2
B. y = 2x + 10
C. y = 0.5x + 7
D. y = 0.5x − 4

someone plz help fast!

Answer 1

Slope-intercept form is y = mx + b, where m is the slope and b is the y-intercept.

The first step is to find the slope using the provided coordinates (-2, 6) and (2, 14). We can do that using the y1 - y2 / x1 - x2, like so:

6 - 14 / -2 - 2
-8 / -4
2

The slope is two, so we immediately know the answer is either A or B.

Now, plot the two points on graphing paper and determine where the line intersects the y-axis to find the y-intercept...

My graph shows the line intersecting the y-axis at 10, therefore the correct answer is:
y = 2x + 10