How many solutions does the system of equations have? y = 4x + 3 and 2y - 8x = 3 one two infinitely many none

In the xy-plane, if the parabola with equation passes through the point (-1, -1), which of the following must be true?

Point r divides in the ratio 1 : 3. if the x-coordinate of r is -1 and the x-coordinate of p is -3, what is the x-coordinate of q? a. b. 3 c. 5 d. 6 e. -9

Identify the number 127 as a rational or irrational. explain