Question

Solve this1
HURRY pleasee

Answer 1

Part a

`m = \frac{280-\boxed{140}}{\boxed{4} - 2} = \frac{\boxed{140}}{\boxed{2}}`

`y = \boxed{70}x`

Part b.
The heart's resting rate is
`\boxed{70}` beats each minute

Explanation:

Q6

Part a

The slope-intercept form of an equation is y = mx + b

where m is the slope and b the y-intercept ie the value of y when x is 0

Here we see when x = 0, y = 0 so the value of b is 0 and the equation is simply

y = mx

To compute m, all we have to do is take 2 points on the graph, find the difference in y values(called rise) and divide by the difference in x values(called run)

This would be
`(y2-y1)/(x2-x1)`

We are given y2 as 280(on the numerator). The corresponding x2 value from the graph is 4

We are given x1(on the denominator) as 2. The corresponding y1 value is 140 from the graph

So just fill in the missing values to get

`m = \frac{280-\boxed{140}}{\boxed{4} - 2} = \frac{\boxed{140}}{\boxed{2}}`

The above simplifies to 70

So the equation is

`y = \boxed{70}x`

Part b
The interpretation is:

The heart's resting rate is
`\boxed{70}` beats each minute