Question

246 The equation of a line is given by the function y mx + b. Determine the value of the X-intercept (where y 0) of the line defined by the equation y 3x + 9. Using the equation for a straight line, what is the formula for the x intercept? 6. 7. What effect will a 1.0°C error (all temperature readings are 1.0°C greater than the actual value) in determining absolute 0 K? Justify your answer. What effect will a 0.10 atm error (reading is 0.10 atm. greater than the actual value) 8. greater than the actual value) have in determining absolute 0 K? Justify your answer. alam of 4hrolute Zer0

Answer 1

First question of the image posted is being answered here.

given equation :-

y = 3x + 9

so for x intercept put y = 0

0 = 3x + 9 so x = -9 / 3

x = -3

To find out the formula we will use the general equation of line

y = mx + c

so for y = 0

0 = mx + c

x = - ( c / m)

feel free to drop comment if you have any doubt.