Answer

Step-by-step explanation:
There are two interpretations we could go for:
- Adding 4 to the end means we add 4 to each y coordinate (since y = x). This <u>shifts the entire line 4 units up</u>
- Replacing x with x+4 means the xy axis is shifted 4 units to the right. If the line y = x is held completely still while the axis moves, then it gives the illusion the line is moving <u>4 units to the left</u>
Check out the diagram below.
Point A on the red line y = x has two locations it could end up. If we follow method 1, then point A shifts upward to point B. Do this to every point on the red line and the entire red line shifts up 4 units.
Or if you decide to shift 4 units to the left (method 2), then point A moves to point C's location. Doing this to every point on the red line shifts the entire line 4 units to the left.
15
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I think true...i might be wrong
Answer:
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Step-by-step explanation:
- When two straight lines intersect each other, then the pairs of angles so formed without any common arm are called vertically opposite angles.
- Vertically opposite angles are equal to each other.
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So,

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Removing the brackets,



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Therefore,