Question 755387
solve the following system of equations algebraically
a. y=2x^2+20x+15 and y=7x
Sub for y
7x = 2x^2+20x+15
It's just a quadratic.  solve for x
==================================
b. 16=x^2-y-4x
2y=6x+4 --> y = 3x + 2
Sub for y as in a
==========================
c. y=5x^2+8x-2 and y=2x-3
Same again