as y = 5x + 64 we can substitute in the first equation getting 7x - 8 (5x + 64) =83 ie 7x -40x - 512 = 83 ie -33x = 595 so x = -18.03 and y = -26.15 Check: 7 x -18.03 = -126.15, 8 x -26.15 = -209.2 , difference 83.05, near enough for the Government.
Chat with our AI personalities
y=-10 sin 5x sin 5x=y/-10 x=asin(y/-10)/5
8
-4
y = 5x^3 - 45x is a polynomial equation that crosses the y axis at x=3.
4