What is nine times a number x, in algebraic expression?​

Which graph represents the equation y =4x

For problems 29 - 31 the graph of a quadratic function y=ax^2 + bx + c is shown. tell whether the discriminant of ax^2 + bx + c = 0 is positive, negative, or zero.

Evaluate 8j -k+148j−k+14 when j=0.25j=0.25 and k=1k=1.