Which of the following represents the slope and y-intercept of the line on which the points lie?

m = 0.4; y-intercept = –1

m = 0.4; y-intercept = –3.4

m = 0.4; y-intercept = -3

m = 2.5; y-intercept = –3.4

Second option: m = 0.4; y-intercept = -3.4

Step-by-step explanation:

First we can write the model of a linear function:

y = mx + b

Then, to find the parameters m (slope) and b (y-intercept), we can use two of the points given:

x = 1 and y = -3:

-3 = m + b (eq1)

x = 6 and y = -1:

-1 = 6m + b (eq2)

Making (eq2) - (eq1), we have:

5m = 2

m = 0.4

Now finding b:

-3 = 0.4 + b

b = -3.4

So the correct answer is the second option: m = 0.4; y-intercept = -3.4

walter needs to make at least 5 more cookies but no more than 40. 5 ≤ x ≤ 40

step-by-step explanation:

20 ≤ x + 15 ≤ 55

subtract 15 from all parts

20-15 ≤ x + 15-15 ≤ 55-15

5 ≤ x ≤ 40

this means how many more cookies he has to make

walter needs to make at least 5 more cookies, but no more than 40 cookies; 5 ≤ x ≤ 40

all it means is function 3