Answer:
c
Step-by-step explanation:
substitute (2,1) and (5,4) into each equation
2-1=1 and 5-4=1 so c is correct
Slope-intercept form is as shown here: y = mx + b
(-8, 1) and (0, -5) in slope-intercept form will be y = -3/4x - 5
(-3, -8) and (2, 7) in slope-intercept form will be y = 3x + 1
It should be -118.2 I just did that on an online calculator/solver. If its not the right answer I can try something different.