Question

Someone please answer this emergency pleaseee

Answer 1

Answer:

7). y = 140

8). x = 9

Step-by-step explanation:

Question (7).

All-right pencil factory will produce the graphite pencils, table formed will represent a linear graph.

Three points on the graph are (12, 42) and (18, 63), (40, y)

Slope of the line passing through these points = $\frac{y_2-y_1}{x_2-x_1}$

m = $\frac{63-42}{18-12}$ = $\frac{y-42}{40-12}$

$\frac{21}{6}$ = $\frac{y-42}{40-12}$

3.5 = $\frac{y-42}{40-12}$

98 = y - 42

y = 140

Question (8),

If a bicyclist rides at a constant rate, table formed will represent a linear graph.

Slope of a line passing through three points (2, 25), (5, 62.5) and (x, 112.5) given in the table,

m = $\frac{y_2-y_1}{x_2-x_1}$

$\frac{62.5-25}{5-2}=\frac{112.5-62.5}{x-5}$

$\frac{37.5}{3}=\frac{50}{x-5}$

37.5x - 187.5 = 150

37.5x = 337.5

x = 9