美国数学题求解释并选择

whatisthey-interceptfortheequation

6x-2y=-4?

选择ABCD

A:-2

B:-2/3

C:2

D:2

SLOPE-INTERCEPTFORM

Itlookslikethis:y=mx+b,cbeingthecoefficientandtheslopeoftheline,b

beingthey-valueofalinethatinterceptsorcrossesthey-axis.

Buttheideareallyistorewriteanequationgiventoyouinthisform.

6X-2Y=-4

Now,startchangethisformtolooklikey=mx+b

Step1:6X-2y=-4,movingthexnow.

Step2:-2y=-4-6xgettingtheybyitselfnow.

Step3:y=(-4-6x)dividedby-2solvingnow.

Step4:y=2+3xrearrangetolooklikethis:y=mx+b

Step5:y=3x+2

Now,trytheseadditionalmathpracticeproblems:

A.Yes/No:6(Y+5)=6Y+5,thisisanexampleoftheDistributiveProperty.

B.Yes/No:given7(P+Q)=84isanequivalentto7P+Q=84.

C.Yes/No:5P-9Q=9Q-5Pthisisanexampleofequivalentexpressions.

D.Solve:7(X-2)=8(X+3)findthevalueofX

Now,trytheseadditionalmathpracticeproblems:

A.Yes/No:6(Y+5)=6Y+5,thisisanexampleoftheDistributiveProperty.

B.Yes/No:given7(P+Q)=84isanequivalentto7P+Q=84.

C.Yes/No:5P-9Q=9Q-5Pthisisanexampleofequivalentexpressions.

D.Solve:7(X-2)=8(X+3)findthevalueofX