Answer:
Correct answer is y =0.5x-6
Tahlia made the error of not including the intercept -6 in the equation.
Step-by-step explanation:
Given that a line n passes through two points (-3, -7.5) and (2, -5)
Let these points be (x1,y1) and (x2,y2)
Using two point formula for straight linees, equation of straight line is
Thus we get the line has slope = 0.5 and y intercept =-6
But Tahlia arrived the answer as slope =0.5 and y intercept =0
Because her y intercept part is wrong, the equation is not correct.