Find the y-intercept of the following equation. Simplify your answer. y=3x+9
4

If the equation is "y=3x+9", then the y-intercept would be 9, and the slope would be 3.

Step-by-step explanation:

The slope is 3/4 and the y intercept is 9

Step-by-step explanation:

The equation is in slope intercept form

y = mx+b  where m is the slope and b is the y intercept

y = 3/4x +9

The slope is 3/4 and the y intercept is 9

the solution of the equation is 2.23 ⇒ answer b

step-by-step explanation:

* lets revise the meaning of exponential function

- the form of the exponential function is y = ab^x, where a ≠ 0, b > 0 ,  

  b ≠ 1, and x is any real number

- it has a constant base b

- it has a variable exponent x

- to solve an exponential equation, take the log or ln of both sides,  

  and solve for the variable

* lets solve the problem

∵

- the base is 7 and the exponent is x

- insert ㏑ in both sides

∴

- use the rule

∴ x ㏑(7) = ㏑(77)

- to find x divide both sides by ㏑(7)

∴

* the solution of the equation is 2.23 to the nearest 2 decimal places