PLS HELP WITH 1-2 ASAP

The equation of a line is usually written in the form of y=mx+c, where m is the gradient and c is the y-intercept. This is also known as the slope-intercept form.

How to identify slope and y-intercept:

① Ensure that only the y term is on the left hand side and the x terms and the constant is on the right hand side.

② Make sure that the coefficient of y is 1.

③ The coefficient of x is the slope and the constant is the y-intercept.

Answering from left to right:

Q1) Slope: -2

y-intercept: -1

~

Slope:

y-intercept: 2

~

slope: 1

y-intercept: 0

~

slope: 7

y-intercept: 3

---------------------------------------------------------

Q2)

y= mx +c

1st from the left:

Given that the slope is , m=

Since the y-intercept is -6, c= -6.

Subst m= and c= -6:

~

y= -3x +3

~

~

4th question for Q2 from the right:

y= 10x + ?

( The y-intercept is not in the picture so substitute that given number into the '?' )

e^-kt = n/n0 = 0.79  

-kt = ln 0.79  

t = - ln 0.79/0.0001  

= 2357 years

step-by-step explanation: