Help pls

b = 59

Step-by-step explanation:

Since table attached in the picture shows the linear relationship,

Equation showing the relationship between the altitude (x) and temperature (y) will be in the form of y = mx + b.

Where m = slope of the line

b = y-intercept of the line

y-intercept of a line means "y-value at x = 0"

For x = 0,

y = m(0) + b

y = b

From the table attached,

at x = 0, y-value = 59°F

Therefore, y-intercept 'b' = 59 will be the answer.

x=half

step-by-step explanation:

i think its a and d

step-by-step explanation: