Don’t know anything about how to work out #5

First find the slope of the line DM using the slope formula: .

Use the points D(0, 2) and M(-3, -5). Substitute in -5 for y2, 2 for y1, -3 for x2, and 0 for x1.

, subtract the coordinate points.

= ; the slope of the line DM is 7/3.

Perpendicular lines have opposite reciprocal slopes, meaning you switch the sign (say for example a negative becomes a positive, a positive becomes a negative) and you flip the fraction over (for example 1/2 becomes 2/1 and 2/1 becomes 1/2).

The opposite reciprocal of 7/3 is -3/7, so the line perpendicular to the line DM has a slope of -3/7.

step-by-step explanation:

through just a quick inspection, one can see that the graph of this cubing function starts in quadrant iii and ends in quadrant i.   when x = 0, y = 3, so the y-intercept is (0, 3).

if graphs are part of the problem statement, share them.   .

the answer is 0.071

good luck! : d