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gavmur [86]
3 years ago
6

What are the x and y-intercepts of the line described by the equation?

Mathematics
1 answer:
pishuonlain [190]3 years ago
8 0
To find the x-intercept, substitute 0 for y and solve for x.
-6x + 3(0) = 18.9
-6x = 18.9
x = 18.9 / -6
x = -3.15 <-- Your x-intercept is (-3.15,0) 

To find the y-intercept, substitute in 0 for x and solve for y.
-6(0) + 3y = 18.9 
3y = 18.9
y = 18.9/3
y = 6.3 (0,6.3) <-- Your x-intercept is (0,6.3)

If this helped, please mark me brainliest, thank you and if you need more help, feel free to message me! 


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"Four times..." means we're multiplying something by 4.

"... the sum of a number and 15..." means we're adding an unknown and 15 and then multiplying the result by 4.

"... is at least 120" means when we substitute the unknown for a value, in order for that value to be in the solution set, it can only be less than or equal to 120.

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In interval notation it would look something like this:

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In set builder notation it would look something like this:

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