Question

Which of the following statements is correct? The function y = 10x is not linear. The function y = -5x - 15 is linear

A The graph of the function y = -20 is not a straight line
B The graph of the function y = 7x to the second power + 4 is not a straight line .
C The graph of the function y = -20 is not a straight line.
D The graph of the function y = 7x2 + 4 is a straight line​

Answer 1

A linear equation is an equation that represents a straight line on a graph. In the given options, the equations y = -3x and y = 0.2 +0.74x are linear equations.

Step-by-step explanation:

A linear equation is an equation that represents a straight line on a graph. In the given options, the equations y = -3x and y = 0.2 +0.74x are linear equations because they can be written in the form y = mx + b, where m is the slope and b is the y-intercept.

In option A, y = -3x, the slope is -3 and the y-intercept is 0, so the graph is a straight line with a negative slope.

In option B, y = 0.2 +0.74x, the slope is 0.74 and the y-intercept is 0.2, so the graph is a straight line with a positive slope.