Q:

What is the slope-intercept form of the equation of the line that passes through the points(-3, 2) and (1, 5) ?a. y=3/4xβˆ’7/4b. y=3/4xβˆ’9/2c. y=3/4x+7/2d. y=3/4x+17/4

Accepted Solution

A:
d. y = 3/4x + 17/4.To write the slope-intercept form y = mx + b of a line passing through (-3, 2) and (1,5).First, we have to calculate the slope m.m = (yβ‚‚-y₁)/(xβ‚‚-x₁), with (x₁, y₁) = (-3, 2) and (xβ‚‚, yβ‚‚) = (1, 5) m = (5 - 2)/(1 - (-3))m = 3/4Second, we have to find the y-intercept.y = mx + b, where m is the slope and b is the y-intercept.Using one of the two ordered pair and plug it in for x and y in the equation y = mx + b.Taking the ordered pair (1, 5):5 = 3/4 (1) + b5 = 3/4 + bSolving for bb = 5 - 3/4b = [5(4) - 3(1)]/4b = (20 - 3)/4b = 17/4Finally, write down the slope-intercept equation of the form y = mx + b, with m = 3/4 and b = 17/4:y = mx + by = 3/4x + 17/4