The straight line l passes through (7a, 5) and (3a, 3). An equation of lis x + by - 12 = 0.
Find the value of a and the value of b.

Pleting the square f the given find the x-intercepts of the parabola with vertex (-5,13) and y-intercept (0, 12). write your answer in this form: (14,.99). if necessary, round to the nearest hundredth. *- h enter the correct answer, de verter, and ametry 00000 done doo