Does anyone get how to do this problem

Find an equation for the linear function which has slope -10 and x-intercept -7

Which of the following equations is of the parabola whose vertex is at (2, 3), axis of symmetry parallel to the y-axis and p = 4? a.)y-3 = 1/16 (x-2)^2 b.)y+3 = -1/16 (x+2)^2 c.)x-2 = 1/16 (y-3)^2

Landon wrote that 3−2.6=4. which statement about his answer is true?